Safety gas-cock.



ATENTED JUNE Q, 1908.

. BHOKMAN,

SAFETY GAS COCK.

APPLIGATION FILED MAR.1S,19GS.

inw/amv,

entre@ sentirne retirent? HARRY l. ROCKllN, OF SIOUX CITY. IOWA, ASSIGNOR OF ONE-HALF lO .l1 llA JONES, 0l" SIOUX CITY, IOWA.

SAFETY GAS-000K.

ne. eeofioi.

Specication of Letten?, Patent.

Application letl. March 13, 1903.

Patnted .time 9, 190e.

sei-inno. ligotee. v

To all 'ui/ioni 'it may concern.'

Be it known that l, lliiinr E. lnocnMAN,

citizen of the United States, residing at Sioux vCity, in the county of 1Woodbury and State of iowa, have invented certain new and useful Improvements in Safety Gas-(jocks, of which the following is a specification.

It is well known that asphyxiation has frequently been caused by the accidental cxtinguislung of a gas burner, owing to a dinnnution in the gas pressure or the blowing out of the gas flame or the'like, no means being pmvided for the subset tient and prompt cutting off of the gas supply from the burner and my invention has for its object a simple, durable and ellicient' construction of device that willcllec-tively prevent such accidents by nt once automatically shutting oli' the. as soon as the -ilaxne has poen extinguished. And a furtherobject of the invention is a de` vice of this character which may be cheaply installed and easily applied to any ordinary gas burner without. the necessity of materiel changes in the gas bracket and without in any wise affecting the ellciency of the burner.

With these and other objects in view as will more fully appear as the description pro- (feeds, the invention consists in certain constructions, arran en'icnts and combinations ot' the partsthat shall hereinafter fully dcseribe and then point. out the novel features in the ap )ended claims.

For a iiill understanding of the invention, reference is to be had to the followiirg dest-ri ition and accompanying drawings, in whic i:

Figure l is a perspective view ol' a snl'ety burner .embodying thel principles ol my invention; Figs. 2 and 3 are front views oli the burner, the parts being illustrated in Fig. 2 in ii position to cut oill the. gas supply in "ig. 3 to permit the gas to flow; and, Fig. 4 is a perspective View illustrating.; a slightly nioditied arrangement of parts for securing one element of the device to the gasliriickct.

Corresponding and like parts are referred to in the following description and indicated in all the views of the drawings by the saine reference characters.

ltelerring to the drawing, the numeral 1 designates a, as bracket or suppl? ipe of any desired ciaracter or design w uci may or may not be provided with the; ordinary manually operated turning plug 2.

3 desijnates tlie burner secured to the' outer en of the supply pipe or bracket irland l mounted upon the casing ot' a cnt-ofi cock which is preferably ot' the turning plug variety, the nlug or axis thereof being indicated at l. This eut-oli cock, may, ilI desired, be of that ordirier)Y type which is often eniployed at the burner for diminishing or increasing the light, the axis carrving at one end a disk formed with lugs 5 and (i adapted l to alternately abut against a lug 7 project- I' ing out l'roin the casing of the cocli so as to limit the movement ol the plug in vone, direc* tion or the other.;

'lhe axis or plug -l ol' the cut-oil' cock is provided nt its opposite cnd with a headts toi-ined with a transverse bore extending therethrough in which n rod-like. lever 9 is `mounted. (lne iirm of this lever is returned upon itselt ns indicated :it it) and is thence extended upwardly as indicated 4at ll to forni n dctent. so disposed :is to oseillnte ir. a vertical plone :it right :ingles to the axis ol the cut-'oicoclt when the latter is turned. i compression spring i2 is secured :u one end to the opposite nrm ol the rod-lille lever l), as clearly illustrated in the drawings. the other end ol' said spring being secured to nn aporturedl projection or hoolt lil soldered or otherwise attached to the burner at the base thereof or to sonic other stntionnry portion of the fixture.

H designates n pull rod or chain which is secured to the lrst 'nnnicd arm ol' the lever il preferably :it thebcnd thereof und which is designed to rock the plug ol' the cut-oli cock against the tension of thc spring l2 so asto turn the cock to open position. l ln order to hold the. cock 4; in open positioii,soloi1giis the llame issuing from the tip ol' the burner il is inextinguished, l provide the tlie'rinostatic rod l5 which is held in a ply pipo i, as by means ol'a screw l? screwi l ing in alsocket'drilled in the supply pipe. .'llie. rod l5 projects upwardly parallel to the l burner 3 and it is provided at its upper end i with a. cross bar Ior arch ltl and thence eirl tends downwardly in close proximity to the burner tip, as best seen in Fig. l, the free extreinity ol' the rod being laterally-disposed as indicated'at 2Q and projecting in e plane at right angles to the lplane o movement of the detent 'l1 and normally just out of the path l of movement ol'ttlie extremity of saddetent.

los

y clamped to the latter by a screw the supply of gas.

for a moment until the heat of the flame exl pands the thermostatic rod 15, or rather the depending portion 19 thereof, sutlicient to cause the laterally Idisposed extremity 2() to engage with the extremity of the detent 11 and thus maintain the cock open so long as the gas is burning. Should, ho\\'ever,. the gas be extinguished from any cause, it is manifest that the thermostatirl rod will atonce cool o' and contract so as to carry the keeper constituted by the portion .20 out of engagement with the extremity of the detent 11, thereby permitting the spi-in 12 to act and at once automatically movel t 1e cuto' cock to the closed position and shut 0H Having thus described the invention, what is claimed as new is:

1. In a device of the character described, the combination with a suppl pi e and burner, of a turning plug controlling t e supply of gas from the pipe .to the burner, a lever secured to the plug and having arms projecting in opposite directions therefrom, a contractile spring secured to one of said arms and exerting a tension thereon to automatically turn the plug to closed position, the other `arm of sanl lever being returned upon itself 1with its extremity projecting upwardly and disposed so as tooscillate in a Vertical plane the combination with a supply pipe 'and' burner, of a turning plug arranged to control the supply of gas from the pipe to the burner,

a detent carried by said plug and mounted to oscillate in a plane at right angles to the axis of the plug, and a thermost-atic rod formed with an oil'set lower end and with anv opposite extremity arranged close to the burner and to the tent, and means for securing the offset lower end of the rod to the sup ly pipe.

in a device of the c aracter described, the combination -with a supply pipe and burner, of a turning plug arrange to control the supply of gas from the pipe to the burner, a detent carriedv b said plug and mounted to oscillate-,in a plane at right angles to the axis of the plug, a thermostatic rod formed with an offset lower end and with an opposite extremity arranged close to the burner and to. the free extremity of the detent, the lower offset end of the rod bein looped, and means securing the offset an( looped lower end of the rod to the supply 1 e. p Iin testimony whereof I affix my signature in presence of two witnesses'.

HARRY E. 'BROCKMAN Witnesses 'l W. N. WoonsoN, FREDERICK S. STITT.

free extremity of the dei 

